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Abstract:

A large three-dimensional 3D image formation device includes four
projectors, four optical reflecting lenses, four transparent reflecting
lenses, mounting box and four image source reflecting lenses. The
projectors project images onto the optical reflecting lenses, and the
images are reflected to the image source optical reflecting lenses, such
that the image source optical reflecting lenses have image source
patterns, and the four image source patterns are projected to the four
transparent reflecting lenses combined into an inverted pyramid shape,
such that the four image source patterns can be combined at the center of
the four transparent reflecting lenses, and viewers can see a 3D image
floating in the air from any angle. The large three-dimensional 3D image
formation device provides a lively 3D perception to enhance the value of
the product.

Claims:

1. A large three-dimensional 3D image formation device, comprising: four
projectors, four optical reflecting lenses, four transparent reflecting
lenses, a mounting box and four image source reflecting lenses,
characterized in that: the four projectors are installed at top edges in
four directions of east, west, south and north respectively for providing
image playing sources, and a power cord is connected at a rear end of the
bottom of the projectors for supplying electric power; the four optical
reflecting lenses are installed with a tilted angle with respect to the
four projectors by a plurality of fixing rods respectively; each of the
four transparent reflecting lenses has a see-through reflecting film
attached on an external surface of each transparent reflecting lens, and
the four transparent reflecting lenses are combined into an inverted
pyramid shape, fixed at the bottom of the four projectors, and supported
by the mounting box, and the four transparent reflecting lenses are
installed at an angle of 45 degrees with respect to the ground; and the
four image source reflecting lenses are installed on the ground and
corresponding to the four transparent reflecting lenses to constitute an
integral structure.

Description:

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a large three-dimensional 3D image
formation device comprised of four projectors, four optical reflecting
lenses, four transparent reflecting lenses, a mounting box and four image
source reflecting lenses, and uses the projectors to project images onto
the optical reflecting lenses, and then reflects the images onto the
image source reflecting lenses, such that the image source reflecting
lenses having image source patterns, and the four image source patterns
are projected onto the four transparent reflecting lenses arranged in an
inverted pyramid shape, and the four image source patterns are combined
at the center of the four transparent reflecting lenses. As a result, a
viewer can see a 3D image floating in the air from any angle of the 360
degrees, and the invention can give a lively 3D perception of the image
to enhance the value of the product.

[0003] 2. Description of the Related Art

[0004] In binocular vision, an object is observed from two viewing angles
or left and right eyes simultaneously. Positions of left and right eyes
are different, so that there is a slight difference between the images
observed by the left and right eyes, and such difference becomes a main
cause of producing 3D images.

[0005] The so-called "persistence of vision" refers to the phenomenon
where our eyes retain an image temporarily after the image was actually
seen and removed. For example, the persistence of vision is used for the
production of cartoon movies. Pictures of a continuous motion are drawn
on a stack of paper one by one according to the motion of a character.
Before an image disappears completely, another image shows up in front of
our eyes, due to the persistence of vision. Now, the eyes will produce an
illusion with the effect like "a piece of still paper is moving". If more
pieces of pictures of the continuous motion are flipped in a specific
time, then the motion of the character will become smoother and more
realistic.

[0006] The frames of televisions and movies are also made by the same
principles, except that approximately 15˜20 frames are played per
second in general cartoon movies, and 24˜30 frames are played per
second in televisions and movies.

[0007] Although the principles of forming 3D images have been developed
for a long time, the 3D effect is still not good, and the bottleneck of
forming a high-quality 3D image cannot be broken through. Furthermore,
the prior art makes use of different spectral wavelengths and a time
difference of one-thirtieth frame per second to cover the left and right
eyes in order to produce an illusion of the 3D image. Users need to wear
a pair of 3D glasses to see the 3D effect. Obviously, the prior art is
inconvenient. In view of the shortcomings of the conventional products,
the inventor of the present invention based on years of experience in the
related industry to conduct extensive researches and experiments, and
finally developed a large 3D image formation device in accordance with
the present invention.

SUMMARY OF THE INVENTION

[0008] It is a primary objective of the present invention to overcome the
shortcomings of the prior art by providing a large 3D image formation
device comprising four projectors, four optical reflecting lenses, four
transparent reflecting lenses, mounting box and four image source
reflecting lenses, wherein the projectors project images onto the optical
reflecting lenses, and then the optical reflecting lenses reflect the
images to the image source optical reflecting lenses, such that the image
source optical reflecting lenses have image source patterns, and the four
image source patterns are projected to four transparent reflecting lenses
combined into an inverted pyramid shape, and the four image source
patterns are combined at the center of the four transparent reflecting
lenses. As a result, a viewer can see a 3D image floating in the air from
any angle to achieve a lively 3D perception to enhance the value of the
product.

[0009] To achieve the foregoing objective, the present invention adopts
the following technical measures.

[0011] The four projectors 10 are installed at top edges in four
directions of east, west, south and north respectively for providing
image playing sources, and a power cord 11 is connected at the bottom of
the projectors 10 for supplying electric power.

[0012] The four optical reflecting lenses 2 are installed and tilted at an
appropriate angle by a plurality of fixing rods 21 and the projectors 10
respectively, and the fixing rods 21 can adjust the distance between the
optical reflecting lenses 2 and the projectors 10.

[0013] Each of the four transparent reflecting lenses 3 includes a
see-through reflecting film 31 attached on an external surface of the
transparent reflecting lens 3, and the four transparent reflecting lenses
3 are combined into an inverted pyramid shape, fixed at the bottom of the
four projectors 10, and supported by the mounting box 4, and the four
transparent reflecting lenses 3 are installed at an angle of 45 degrees
with respect to the ground 8.

[0014] The four image source reflecting lenses 5 are installed on the
ground and corresponding to the four transparent reflecting lenses 3
respectively to form an integral structure for showing a large 3D image
6.

[0015] With reference to FIG. 4 for the principles of forming a large 3D
image in accordance with the present invention, the transparent
reflecting lenses 3 and the image source optical reflecting lenses 5 are
installed and tilted at an angle of 45 degrees, wherein the distance D1
between the image source position 51 and the image reflecting position 32
is equal to the distance D2 between the image reflecting position 32 and
the image forming position 62, so that the images can be combined into a
3D image at the image forming position 62.

[0016] To make it easier for our examiner to understand the objects,
effects and advantages of the present invention, we use preferred
embodiments with related drawings for the detailed description of the
present invention as follows.

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG. 1 is a perspective view of the present invention;

[0018]FIG. 2 is a schematic view of a 3D image formation device in
accordance with the present invention;

[0019]FIG. 3 is a schematic view of a lateral side of a transparent
reflecting lens in accordance with the present invention; and

[0020] FIG. 4 is a schematic view of the principles of forming a large 3D
image in accordance with the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] With reference to FIGS. 1 and 2 for the components before the large
3D image formation device of the invention are assembled, projectors 10
are provided for projecting images to optical reflecting lenses 2
installed and tilted at an appropriate angle, and then the images are
reflected to image source optical reflecting lenses 5, so that the image
source optical reflecting lenses 5 have image source patterns 61. The
present invention uses the principles of reflection to project the images
by the projectors 10 and further uses the reflection of lenses and lenses
to increase the projection distance, and the projection distance and the
size of the projected image are directly proportional to each other, so
that the invention effectively utilizes the space to obtain large sharp
images and avoids occupying too much space for receiving sufficiently
large image sources.

[0022] The present invention uses four image source optical reflecting
lenses 5 having four image source patterns 61 respectively, and the four
image source patterns 61 are projected onto four transparent reflecting
lenses 3 combined into an inverted pyramid shape, such that the four
image source patterns 61 can be combined at the center of the inverted
pyramid shape of the four transparent reflecting lenses 3, and viewers 7
can see a 3D image 6 floating in the air from any angle of the
surrounding 360 degrees. With the specific angles of reflections, the
invention allows viewers 7 to see one image at a time from the same
angle. For dynamic, rotating or moving images, a more lively 3D
perception can be achieved.

[0023] While the invention has been described by means of specific
embodiments, numerous modifications and variations could be made thereto
by those skilled in the art without departing from the scope and spirit
of the invention set forth in the claims.

[0024] In summation of the above description, the present invention herein
enhances the performance than the conventional structure and further
complies with the patent application requirements and is duly filed for
patent application.